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Digestive Diseases and Sciences

, Volume 40, Issue 10, pp 2177–2183 | Cite as

Neutrophil elastase inhibitor (ONO-5046) prevents lung hemorrhage induced by lipopolysaccharide in rat model of cerulein pancreatitis

  • Lei Guo
  • Yasuo Yamaguchi
  • Satoshi Ikei
  • Hiroki Sugita
  • Michio Ogawa
Pancreatic and Biliary Disorders

Abstract

The protective effects of a neutrophil elastase inhibitor (ONO-5046) on cerulein-induced pancreatitis followed by a septic challenge with intraperitoneal lipopolysaccharide (LPS) were studied in a rat model. Pancreatitis was induced by four intramuscular injections of cerulein (50 μg/kg at 1-hr intervals). ONO-5046 was administered by continuous intravenous infusion via the right jugular vein (50 mg/kg/hr, 30 min prior to the first cerulein injection to 20 hr following the last cerulein injection). Significant differences in serum amylase and pancreatic wet weight ratio were not observed between the animals with pancreatitis treated with or without ONO-5046. There was no significant difference in thein vitro tumor necrosis factor-alpha (TNF-α) production by peritoneal macrophages from rats with pancreatitis treated with or without ONO-5046. In a second experiment, LPS (10 mg/kg) was administered intraperitoneally as the septic challenge 6 hr following the first cerulein injection. Lung hemorrhage was seen in the animals with pancreatitis untreated with ONO-5046 24 hr following the first cerulein injection. No significant lung hemorrhage was observed in the animals with pancreatitis treated with ONO-5046 administering 30 min prior to the first cerulein injection. These results suggest that lung hemorrhage in cerulein-induced pancreatitis that follows a septic challenge with LPS can be prevented by the intravenous administration of ONO-5046. Thus there is a significant role for neutrophil elastase in pancreatitisassociated lung injury.

Key Words

neutrophil elastase inhibitor pancreatitis lung injury 

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Copyright information

© Plenum Publishing Corporation 1995

Authors and Affiliations

  • Lei Guo
    • 1
  • Yasuo Yamaguchi
    • 1
  • Satoshi Ikei
    • 1
  • Hiroki Sugita
    • 1
  • Michio Ogawa
    • 1
  1. 1.Department of Surgery IIKumamoto University Medical SchoolKumamotoJapan

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